CN212323691U

CN212323691U - Cable thermal shrinkage terminal

Info

Publication number: CN212323691U
Application number: CN202021093717.2U
Authority: CN
Inventors: 高强龙; 王岩华; 郑建强; 许道岛; 李华垓; 杨帆; 江丙有; 夏昌学; 江武川; 刘赵辉
Original assignee: YONGJIU ELECTRIC POWER FITTING CO Ltd
Current assignee: YONGJIU ELECTRIC POWER FITTING CO Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-01-08
Anticipated expiration: 2030-06-12

Abstract

The utility model relates to the technical field of cable connection, and aims to provide a cable thermal shrinkage terminal, which comprises a cable, wherein a plurality of wire cores are arranged in the cable, and one ends of the wire cores extend to the outside of the cable to form extension ends; the cable is provided with a thermal shrinkage branch sleeve, the thermal shrinkage branch sleeve comprises a sleeve seat sleeved on the cable and a plurality of branch sleeves sleeved on corresponding extension ends, the branch sleeves extend to the tail ends of the extension ends, one ends of the branch sleeves, far away from the sleeve seat, are provided with communicated thermal shrinkage connecting sleeves, and the extension ends extend into the thermal shrinkage connecting sleeves; the heat-shrinkable connecting sleeve is provided with a transition wire clamp, the transition wire clamp comprises a tubular end and a flat plate end, the tubular end is in plug-in fit in the heat-shrinkable connecting sleeve, the flat plate end is positioned outside the heat-shrinkable connecting sleeve, and the extension end is in plug-in fit in the tubular end; the heat-shrinkable fixing sleeve which coats the joint of the heat-shrinkable connecting sleeve and the tubular end is sleeved on the sub-sleeve; the utility model discloses have the effect that makes cable and transition fastener connect firmly.

Description

Cable thermal shrinkage terminal

Technical Field

The utility model relates to a cable junction technical field, in particular to cable pyrocondensation terminal.

Background

When the cable is connected with branch equipment, a transformer, distribution equipment or other electric equipment, a connecting device which can meet certain insulation and sealing requirements is needed, and the connecting device is called a cable terminal. The cable terminal is divided into an indoor terminal and an outdoor terminal according to different use places. Outdoor terminals need to have a relatively perfect sealing and waterproof structure to adapt to the change of the surrounding environment and climate.

Chinese patent document with an authorization publication number of CN210326970U discloses a crosslinked cable heat-shrinkable three-core terminal, which comprises a cable, a branch sleeve sleeved outside the top end of the cable, and three groups of heat-shrinkable tubes, terminals and wiring terminals sequentially connected to the top end of the cable from bottom to top, wherein the top of the branch sleeve is sleeved with three heat-shrinkable finger sleeves, the inner sides of the three heat-shrinkable finger sleeves are provided with internal threads, the top of the inner sides of the three heat-shrinkable finger sleeves is provided with a rotary sleeve, and the bottom of the inner sides of the rotary sleeve is fixedly connected with an inclined block.

The above prior art solutions have the following drawbacks: the terminal among the above-mentioned generally is the transition fastener, and the tubulose end on the transition fastener is fixed and is sealed through the insulating tube after pegging graft with the sinle silk, but the terminal condition that breaks away from the sinle silk appears easily after receiving to drag for circuit connection is unstable.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a cable pyrocondensation terminal has the effect that makes cable and transition fastener connect firmly.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a cable thermal shrinkage terminal comprises a cable, wherein a plurality of wire cores are arranged in the cable, and one ends of the wire cores extend to the outside of the cable to form extension ends; the cable is provided with a thermal shrinkage branch sleeve, the thermal shrinkage branch sleeve comprises a sleeve seat sleeved on the cable and a plurality of branch sleeves sleeved on corresponding extension ends, the branch sleeves extend to the tail ends of the extension ends, one ends of the branch sleeves, far away from the sleeve seat, are provided with communicated thermal shrinkage connecting sleeves, and the extension ends extend into the thermal shrinkage connecting sleeves; the heat-shrinkable connecting sleeve is provided with a transition wire clamp, the transition wire clamp comprises a tubular end and a flat plate end, the tubular end is in plug-in fit in the heat-shrinkable connecting sleeve, the flat plate end is positioned outside the heat-shrinkable connecting sleeve, and the extension end is in plug-in fit in the tubular end; the sub-sleeve is sleeved with a thermal shrinkage fixing sleeve which coats the joint of the thermal shrinkage connecting sleeve and the tubular end.

By adopting the technical scheme, the tubular end is inserted into the thermal shrinkage connecting sleeve, the extending end is in plug fit with the tubular end, the thermal shrinkage connecting sleeve is heated to connect the cable with the tubular end, and finally, the connecting part of the thermal shrinkage connecting sleeve and the tubular end is fixed through the thermal shrinkage fixing sleeve, so that the cable is firmly connected with the transition wire clamp, and the transition wire clamp is difficult to separate from the cable.

The utility model discloses further set up to: the extending end is sleeved with a threaded copper sleeve, and the outer circumferential wall of the threaded copper sleeve is provided with an external thread; the thread copper sleeve is characterized in that a plurality of wire grooves are formed in the outer circumferential wall of the thread copper sleeve along the circumferential direction, the wire grooves axially extend along the thread copper sleeve and penetrate through the two ends of the thread copper sleeve, and internal threads matched with the thread copper sleeve in a threaded mode are arranged on the inner circumferential wall of the tubular end.

By adopting the technical scheme, the thread copper sleeve is sleeved on the extension end, the wire core on the strong extension end is peeled and divided into a plurality of strands and the strands are clamped into the corresponding wire grooves respectively, so that the thread copper sleeve is fixed on the extension end, and then the thread copper sleeve is in threaded connection with the tubular end without using a crimping pliers to extrude the tubular end, thereby improving the stability of the connection of a cable and a transition wire clamp and ensuring that the installation is more convenient.

The utility model discloses further set up to: the inner wall of the thermal shrinkage connecting sleeve is provided with a fixing ring along the circumferential direction, and the outer wall of the tubular end is provided with an annular groove matched with the fixing ring in a clamping mode along the circumferential direction.

Through adopting above-mentioned technical scheme, solid fixed ring and ring channel cooperation make transition fastener card go into the corresponding position in the pyrocondensation connecting sleeve, prevent that the tubulose end from excessively screwing and making sinle silk torsional deformation.

The utility model discloses further set up to: the opening of the wire groove is U-shaped.

Through adopting above-mentioned technical scheme, the U-shaped opening of wire casing is convenient for hold the structural strength of sinle silk and screw thread copper sheathing better.

The utility model discloses further set up to: and the outer circumferential wall of the tubular end is provided with an antiskid bulge.

Through adopting above-mentioned technical scheme, the antiskid is protruding to be used for preventing that tubular end breaks away from in the pyrocondensation connecting sleeve.

The utility model discloses further set up to: and a heat-shrinkable sealing sleeve is sleeved at the joint of the cable and the sleeve seat.

Through adopting above-mentioned technical scheme, the pyrocondensation seal cover carries out secondary seal with the junction of cover seat with the cable, prevents into water.

The utility model discloses further set up to: and friction grains are arranged on the outer side wall of the heat-shrinkable sealing sleeve.

Through adopting above-mentioned technical scheme, the friction line is convenient for the installer to grip the cable.

The utility model discloses further set up to: and the flat plate end is provided with a wiring hole.

Through adopting above-mentioned technical scheme, the wiring hole is used for the cable to be connected with other cables.

To sum up, the beneficial effects of the utility model are that:

1. the tubular end is inserted into the thermal shrinkage connecting sleeve, the extending end is in plug fit with the tubular end, the thermal shrinkage connecting sleeve is heated to connect the cable with the tubular end, and finally the connecting part of the thermal shrinkage connecting sleeve and the tubular end is fixed through the thermal shrinkage fixing sleeve, so that the cable is firmly connected with the transition wire clamp, and the transition wire clamp is difficult to separate from the cable;

2. the copper thread sleeve is sleeved on the extension end, the wire core on the strong extension end is peeled and divided into a plurality of strands which are clamped into corresponding wire grooves respectively, so that the copper thread sleeve is fixed on the extension end, and then the copper thread sleeve is in threaded connection with the tubular end, the tubular end is not required to be extruded by using a crimping pliers, and the stability of connection between a cable and a transition wire clamp is improved, and meanwhile, the installation is more convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an exploded schematic view of the present invention;

FIG. 3 is a schematic cross-sectional view of the tubular end of the present invention after attachment to the extension end;

fig. 4 is a schematic structural view of the threaded copper bush of the present invention.

Reference numerals: 1. a cable; 2. an extension end; 3. thermally shrinking the branch sleeve; 31. a sleeve seat; 32. sleeving; 4. a heat-shrinkable sealing sleeve; 41. rubbing the lines; 5. a thermal shrinkage connecting sleeve; 6. a transition wire clamp; 61. a tubular end; 611. an annular groove; 612. anti-skid projections; 62. a flat end; 621. a wiring hole; 7. thermal shrinkage fixing sleeves; 71. a fixing ring; 8. a threaded copper bush; 81. a wire slot.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a cable thermal shrinkage terminal, as shown in fig. 1 and 2, which includes a cable 1, wherein a plurality of cores are arranged in the cable 1, and one end of each core extends to the outside of the cable 1 to form an extension end 2. The cable 1 is provided with a thermal shrinkage branch sleeve 3, the thermal shrinkage branch sleeve 3 comprises a sleeve seat 31 which is respectively positioned at two ends and is sleeved on the cable 1, and a plurality of branch sleeves 32 which are sleeved on the corresponding extension ends 2, a thermal shrinkage sealing sleeve 4 is sleeved at the joint of the cable 1 and the sleeve seat 31, and friction grains 41 are integrally formed on the outer side wall of the thermal shrinkage sealing sleeve 4.

As shown in fig. 2 and 3, the partial sleeve 32 extends to the end of the extending end 2, a heat-shrinkable connecting sleeve 5 which is coaxial and communicated with the axis is integrally formed at one end of the partial sleeve 32 away from the sleeve seat 31, and the extending end 2 extends into the heat-shrinkable connecting sleeve 5. The heat-shrinkable connecting sleeve 5 is provided with a transition wire clamp 6, the transition wire clamp 6 comprises a tubular end 61 and a flat plate end 62, and a wiring hole 621 is formed in the flat plate end 62. The tubular end 61 is inserted and matched in the heat-shrinkable connecting sleeve 5, the flat plate end 62 is positioned outside the heat-shrinkable connecting sleeve 5, and the extension end 2 is inserted and matched in the tubular end 61. The sub-sleeve 32 is sleeved with a heat-shrinkable fixing sleeve 7 which coats the joint of the heat-shrinkable connecting sleeve 5 and the tubular end 61.

As shown in fig. 2 and 3, the extending end 2 is sleeved with a threaded copper sleeve 8, and an outer circumferential wall of the threaded copper sleeve 8 is provided with an external thread. A plurality of wire grooves 81 (shown in figure 4) with U-shaped openings are formed in the outer circumferential wall of the threaded copper sleeve 8 along the circumferential direction, the wire grooves 81 axially extend along the threaded copper sleeve 8 and penetrate through the two ends of the threaded copper sleeve, and internal threads matched with the threaded copper sleeve 8 in a threaded mode are formed in the inner circumferential wall of the tubular end 61; the threaded copper bush 8 is sleeved on the extension end 2, then the tail end of the extension end 2 is peeled, the exposed metal wire is divided into a plurality of strands and clamped in the corresponding wire grooves 81, so that the threaded copper bush 8 is fixed with the extension end 2, and then the tubular end 61 is in threaded connection with the threaded copper bush 8, so that the cable is fixed with the transition wire clamp 6. The inner wall of the heat-shrinkable connecting sleeve 5 is integrally formed with a fixing ring 71 arranged along the circumferential direction, the outer wall of the tubular end 61 is circumferentially provided with an annular groove 611 in clamping fit with the fixing ring 71, and the fixing ring 71 is matched with the annular groove 611 to enable the tubular end 61 to be positioned at a corresponding position in the heat-shrinkable connecting sleeve 5. The outer circumferential wall of the tubular end 61 is integrally formed with an anti-slip projection 612 for preventing the tubular end 61 from being separated from the heat-shrinkable connecting sleeve 5.

The specific operation flow of this embodiment is as follows:

sleeving the sleeve seat 31 on the cable 1, sleeving the branch sleeve 32 on the corresponding extension end 2, enabling the extension end 2 to enter the heat-shrinkable connecting sleeve 5, sleeving the threaded copper sleeve 8 at one end of the extension end 2 in the connecting sleeve, cutting off the outer skin at the tail end of the extension end 2 after the tail end of the extension end 2 passes through the connecting sleeve, dividing the exposed metal wires into a plurality of strands, respectively clamping the strands into the corresponding wire grooves 81, fixing the threaded copper sleeve 8 and the extension end 2, then connecting the tubular end 61 with the threaded copper sleeve 8 in a threaded manner, and finally cladding and fastening the joint of the heat-shrinkable connecting sleeve 5 and the tubular end 61 by using the heat-shrinkable fixing sleeve 7.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A cable thermal shrinkage terminal comprises a cable (1), wherein a plurality of wire cores are arranged in the cable (1), and one ends of the wire cores extend to the outside of the cable (1) to form extension ends (2); be provided with thermal contraction branch cover (3) on cable (1), thermal contraction branch cover (3) are located branch cover (32) on corresponding extension end (2) including cover seat (31), a plurality of covers on cable (1), its characterized in that: the branch sleeve (32) extends to the tail end of the extension end (2), one end, far away from the sleeve seat (31), of the branch sleeve (32) is provided with a communicated heat-shrinkable connecting sleeve (5), and the extension end (2) extends into the heat-shrinkable connecting sleeve (5); the heat-shrinkable connecting sleeve (5) is provided with a transition wire clamp (6), the transition wire clamp (6) comprises a tubular end (61) and a flat plate end (62), the tubular end (61) is in plug-in fit in the heat-shrinkable connecting sleeve (5), the flat plate end (62) is positioned on the outer side of the heat-shrinkable connecting sleeve (5), and the extension end (2) is in plug-in fit in the tubular end (61); the sub-sleeve (32) is sleeved with a thermal shrinkage fixing sleeve (7) which coats the joint of the thermal shrinkage connecting sleeve (5) and the tubular end (61).

2. The cable shrink termination of claim 1, wherein: the extending end (2) is sleeved with a threaded copper sleeve (8), and an external thread is arranged on the outer circumferential wall of the threaded copper sleeve (8); the thread copper sleeve is characterized in that a plurality of thread grooves (81) are formed in the outer circumferential wall of the thread copper sleeve (8) along the circumferential direction, the thread grooves (81) axially extend along the thread copper sleeve (8) and penetrate through the two ends of the thread copper sleeve, and internal threads matched with the thread copper sleeve (8) in a threaded mode are formed in the inner circumferential wall of the tubular end (61).

3. The cable shrink termination of claim 2, wherein: the inner wall of the thermal shrinkage connecting sleeve (5) is provided with a fixing ring (71) along the circumferential direction, and the outer wall of the tubular end (61) is provided with an annular groove (611) which is matched with the fixing ring (71) in a clamping manner along the circumferential direction.

4. The cable shrink termination of claim 2, wherein: the opening of the wire groove (81) is U-shaped.

5. The cable shrink termination of claim 2, wherein: the outer circumferential wall of the tubular end (61) is provided with an anti-skid projection (612).

6. The cable shrink termination of claim 1, wherein: the joint of the cable (1) and the sleeve seat (31) is sleeved with a heat-shrinkable sealing sleeve (4).

7. The cable shrink termination of claim 6, wherein: and friction grains (41) are arranged on the outer side wall of the heat-shrinkable sealing sleeve (4).

8. The cable shrink termination of claim 1, wherein: the flat plate end (62) is provided with a wiring hole (621).